Abstract
The discovery of magnetic topological semimetals has recently attracted significant attention in the field of topology and thermoelectrics. In a thermoelectric device based on the Nernst geometry, an external magnet is required as an integral part. Reported is a zero-field Nernst effect in a newly discovered hard-ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2. A maximum Nernst thermopower of ≈3 µV K−1 at 80 K in zero field is achieved in this magnetic Weyl-semimetal. The results demonstrate the possibility of application of topological hard magnetic semimetals for low-power thermoelectric devices based on the Nernst effect and are thus valuable for the comprehensive understanding of transport properties in this class of materials.
| Original language | English |
|---|---|
| Article number | 1806622 |
| Journal | Advanced Materials |
| Volume | 31 |
| Issue number | 25 |
| DOIs | |
| State | Published - Jun 20 2019 |
Funding
This study was financially supported by the ERC Advanced grant no. (742068) “TOP-MAT”, and Deutsche Forschungsgemeinschaft DFG under SFB 1143. S.N.G., Ch.F., and E.K.L. thank the Alexander von Humboldt Foundation for the fellowships. E.K.L. also thanks the National Natural Science Foundation of China (no. 51722106). This study was financially supported by the ERC Advanced grant no. (742068) ?TOP-MAT?, and Deutsche Forschungsgemeinschaft DFG under SFB 1143. S.N.G., Ch.F., and E.K.L. thank the Alexander von Humboldt Foundation for the fellowships. E.K.L. also thanks the National Natural Science Foundation of China (no. 51722106).
Keywords
- hard magnets
- magnetic Weyl-semimetals
- Nernst effect
- thermoelectrics
- zero-field Nernst thermopower